i don’t know about that . Right way is be sure you have true tdc mark on damper ( use a piston stop from each direction in #1 ), middle is tdc then attach damper tape ( hot heads ) glue with weatherstrip adhesive , set timing to factory setting . Timing by ear etc can blow a hole in piston . be sure weights and springs are free . Dampers are known to slip on our cars ... Sent from my iPhone not by choice On 3 Jan 2022, at 5:08 pm, RON WATERS <ronbo97@xxxxxxxxxxx> wrote: Another way to set timing is to attach a vacuum gauge to the intake. Warm car up, then adjust timing until gauge reads 18" Hg at curb idle. Then take it for a drive. If it's still pinging, retard a bit and try again. Ron -- For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang --- You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group. To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx. To view this discussion on the web visit https://groups.google.com/d/msgid/chrysler-300-club-international/751904393.607476.1641247693353%40connect.xfinity.com. -- For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang --- You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group. To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx. To view this discussion on the web visit https://groups.google.com/d/msgid/chrysler-300-club-international/47D7BDC4-E76A-4A7D-A229-705CCBBD8690%40gradyresearch.com.